Greetings from the Carnegie International Nuclear Policy Conference aka Nukestock.

We had an oddly bloodless discussion this morning of the unfolding events at Fukushima.  One thing that struck me about the panel, with perhaps Mark Hibbs excepted, was the gap in perception between nuclear industry and the public at large.  The panel seemed to view this as an unfortunate inconveneince for the coming nuclear renaissance.  To me, at least, that seems like the captain of the Titanic wondering whether he’s still going to make his dinner reservations.

Anywho, here is the full text of the latest information sheet from FEPC.

Update to Information Sheet Regarding the Tohoku Earthquake

The Federation of Electric Power Companies of Japan (FEPC) Washington DC Office

As of 12:30PM (EST), March 28, 2011

  • Radiation Levels
    • At 6:00PM (JST) on March 28, radiation level at main gate (approximately 3,281 feet from Unit 2 reactor building) of Fukushima Daiichi Nuclear Power Station: 186 micro Sv/hour.
    • At 6:00PM on March 28, radiation level at west gate (approximately 3,609 feet from Unit 2 reactor building) of Fukushima Daiichi Nuclear Power Station: 121.6 micro Sv/hour.
    • As of 7:00PM on March 28, the results of the radioactive nuclides detected from the sample of waterhole at the turbine building of each unit of Fukushima Daiichi are as follows:

 

  Unit 1 Unit 2 Unit 3 Unit 4
Date of Samples taken March 26 March 26 March 26 March 26
Radiation Level on the Surface 60 milli Sv/hour more than1,000 milli Sv/hour 750 milli Sv/hour 0.50 milli Sv/hour
Nuclides (half-life) Concentration (Unit : Bq/cm3)
I-131 (8 days) 1.5 x 105 1.3 x 107 3.2 x 105 3.6 x 102
I-132 (2 hours) UDL UDL UDL 1.3 x 101
I-134 (53 minutes) UDL UDL UDL UDL
Cs-134 (2 years) 1.2 x 105 2.3 x 105 5.5 x 104 3.1 x 101
Cs-136 (13 days) 1.1 x 104 2.5 x 105 6.5 x 103 3.7 x 100
Cs-137 (30 years) 1.3 x 105 2.3 x 106 5.6 x 104 3.2 x 101

UDL: under the detection limit

  •  
    • Measurement results of environmental radioactivity level around Fukushima Nuclear Power Station announced at 7:00PM on March 28 are shown in the attached PDF file. English version is available at:    http://www.mext.go.jp/english/radioactivity_level/detail/1304082.htm
    • For comparison, a human receives 2,400 micro Sv per year from natural radiation in the form of sunlight, radon, and other sources. One chest CT scan generates 6,900 micro Sv per scan.
  • Fukushima Daiichi Unit 1 reactor
    • At 2:30PM on March 26, it was announced that radioactive nuclide I-131 was detected from the sampling of seawater near the seawater discharge point The level of concentration was approximately 1,850 times higher than the maximum permissible water concentration set by the government and it was approximately 1.5 times higher than the previous day’s figure.
    • As of 3:10PM on March 27, recovery and transfer work of the waterhole at the turbine building to the condenser by using three pumps was underway.
    • At 3:30PM on March 27, it was announced that 0.4milli (400,000 micro) Sv/hour was detected on the surface of the waterhole at the trench (concrete tunnel in which the pipes are laid down) outside turbine building.
    • At 12:30PM on March 28, pressure inside the reactor core: 0.376MPa.
    • At 12:30PM on March 28, water level inside the reactor core: 1.75 meters below the top of the fuel rods.
    • At 12:30PM on March 28, pressure inside the primary containment vessel: 0.270MPaabs.
  • Fukushima Daiichi Unit 2 reactor
    • At 10:10AM on March26, injection of freshwater in place of seawater into the reactor core started.
    • At 4:46PM on March 26, lighting was restored in the Central Control Room.
    • As of 7:30AM on March 27, transfer work of the waterhole at the turbine building to the condenser was under preparation.
    • At 3:30PM on March 27, it was announced that more than 1,000 milli (1,000,000 micro) Sv/hour was detected on the surface of the waterhole at the trench outside turbine building.
    • At 12:30PM on March 28, the temperature of the spent fuel pool: 121.1 degrees Fahrenheit.
    • At 12:30PM on March 28, pressure inside the reactor core: -0.032MPa.
    • At 12:30PM on March 28, water level inside the reactor core: 1.5 meters below the top of the fuel rods.
    • At 12:30PM on March 28, pressure inside the primary containment vessel: 0.1MPaabs.
    • As of 3:00PM on March 28, the injection of freshwater into the reactor core continues.
    • As of 7:00PM on March 28, approximately 96 tons of water in total has been injected into the spent fuel storage pool. 
  • Fukushima Daiichi Unit 3 reactor
    • As of 7:30AM on March 27, transfer work of the waterhole at the turbine building to the condenser was under consideration.
    • At 12:34PM on March 27, TEPCO began to shoot water aimed at the spent fuel pool, with a specialized vehicle normally used for pumping concrete, until 2:36PM (approximately 100 tons in total).
    • At 3:30PM on March 27, it was announced that the waterhole was found at the trench outside turbine building, but TEPCO couldn’t measure the radiation level on the surface due to rubbles.
    • At 10:30AM on March 28, pressure inside the reactor core: 0.025MPa.
    • At 10:30AM on March 28, water level inside the reactor core: 1.85 meters below the top of the fuel rods.
    • At 10:30AM on March 28, pressure inside the primary containment vessel: 0.1076MPaabs.
    • As of 7:00PM on March 28, approximately 4,597 tons of water in total has been shot to the spent fuel storage pool.
  • Fukushima Daiichi Unit 4 reactor
    • At 4:55PM on March 27, TEPCO began to shoot water aimed at the spent fuel pool, with a specialized vehicle normally used for pumping concrete, until 7:25PM (approximately 125 tons in total).
    • As of 7:30AM on March 27, transfer work of the waterhole at the turbine building to the condenser was under consideration.
    • As of 7:00PM on March 28, approximately 960 tons of water in total has been shot to the spent fuel storage pool. 
    • As of 7:00PM on March 28, external power generation is connected and the functionality of the electric devices is being checked.
  • Fukushima Daiichi Unit 5 reactor
    • At 2:00PM on March 28, the temperature of the spent fuel pool: 87.6 degrees Fahrenheit.
  • Fukushima Daiichi Unit 6 reactor
    • At 2:00PM on March 28, the temperature of the spent fuel pool: 86.9 degrees Fahrenheit.
  • Fukushima Daiichi Common Spent Fuel Pool
    • At 8:00AM on March 27, the temperature of the spent fuel pool: 102.2 degrees Fahrenheit.
    • As of 7:00PM on March 28, approximately 130 tons of water in total has been injected to the spent fuel storage pool.

 

Our official sources are:

  • Office of The Prime Minister of Japan
  • Nuclear and Industrial Safety Agency (NISA)
  • Tokyo Electric Power Company (TEPCO) Press Releases
  • Ministry of Education, Culture, Sports, Science and Technology (MEXT)